babbitt



(No ModeL) 2 Shets-She'et 1. B. T. BABBITT.

STEAM GENERATOR.

No. 340,188. PatentedA r. 20, 1886.

F551 p v Entree seam BENJAMIN T. BABBITT,

PATENT @rricE.

OF NE\V YORK, N. Y.

STEAM-G ENERATO R.

SPECIFACATIUN' forming part of Letters Patent No. 340,188, dated April 20, 1886.

Application filed August. 31, 1885.

To ail whom it may concern.-

Be it known that I, BENJAMIN T. BABBITT, of the city of New York, in the county of New York and State of New York, have invented a new and useful Improvement in Steam-Generators, of which the following is a specification.

My invention relates to that class of steamgenerators in which are employed a central upright reservoir or chamber composed of horizontally'arranged sections connected together, each section being provided with llOl' low arms or tubes, which extend radially from it in a horizontal plane.

The inventiouconsists in the combination, with an upright reservoir or chamber com posed of a series of rings superposed one upon another in edge-to-edge contact, and heads above and below the rings, of a central bolt connecting the heads and securing the heads and rings together, and horizontal series of tubes made separate from the rings and in serted radially therein. This generator is arranged within a furnace, which is preferably internally circular, and has a number of grates arranged at different points around the central reservoir or chamber, and said central reservoir or chamber is constructed with a laterallyprojecting'fiange or ledge near its base portion, on which the inner ends of the several grates are supported.

In the accompanying drawings, Figure l is a vertical section of a generator embodying my invention; and Fig. 2 is a horizontal section upon the plane of the dotted line 00 m, Fig. 1.

Similar letters of reference designate corresponding parts in both figures.

The central upright reservoir or chamber, which forms the principal steam and water space for the generator, is composed of a series of rings or circular sections, A, which are superposed one on another, and upper and lower heads, A A which are here shown as hemispherical in shape. The several rings or sections A may have their adjacent surfaces or edges turned off truly, and they may be put together with, any material suitable for making a steam and water tight joint between them. The several rings or sections and the two heads are clamped and held firmly together by means of the bolt or rod B, which is Serial No. 175,688. (No model.)

here shown extending centrally through the upright reservoir or chamber, and has at opposite ends nuts a, which may be turned to clamp the several parts tightly together. The central reservoir or chamber has at its lower end or base a laterally-projecting flange or bracket, 1), which rests upon the brick setting 0 of the generator and supports the reservoir or chamber in its upright position. At the lower end of the reservoir or chamber is a blow-off pipe,.c, and at the upper end is a pipe, d, from which steam may be taken from the generator.

G designates the upright walls of the generator, which are here represented as circular in horizontal sections; and D designates the grates, which are arranged at intervals around the reservoir or chamber. I have here represented four grates, D, as shown in Fig. 2; out a greater or less number may be employed. These grates may be composed of grate-bars, the inner ends of which rest and are supported upon a flange or ledge, e, projecting laterally from the reservoir or chamber near the base thereof, and the outerends of which rest upon suitable bearers extending around the interior of the furnace-wall. The generator is also provided with fire-doorsf and ash-pit doors 9, arranged opposite the grates, and the brickwork 0 of the setting may be prolonged upward between the several grates, so as to form side walls,whereby the fire upon the grates is held against lateral displacement.

Edesignates tubes,which are closed at thei outer ends, and have their inner ends inserted in the several rings or circular sections A of which the generator is composed. These tubes project regularly from the several rings or sections, as will be best understood from Fig. 2, and the rings or sections, when placingthem one upon another, are so arranged that their tubes will stand in staggered relation to each other. In other words, tubes extending from any one ring or section will lie between or opposite the spaces between the tubes of the adjacent rings or sections. The tubes projecting from two, three, or more of the lowermost rings or sections A may be closed at the ends by caps or couplings h, in which are inserted plugs h, and by removing these plugs a brush may be readily introduced for cleaning these lowermost tubes. Access is afforded for reaching the outer ends of these tubes to clean them through openings or holes 1' in the walls 0, which openings or holes are ordinaril y closed by suitable stoppers or doors.

From the above description it will be seen that the .generator is composed entirely of separable parts, which are severally of comparatively light weight, so that they may be readily handled when it is desired to set up or remove the generator. All that is necessary to take down or separate them is to remove the nuts from the bolt or rod B, which will permit of the several sections and the heads being handled separately, and when it is desired to erect or set up the generator the lower head is first placed in position. The several rings or sections are then superposed thereon, and the bolt B may then be introduced and the nuts applied to it to firmlyclamp the sev eral parts together.

J designates the outletopening, through which the smoke and spent products of combustion may escape from the generator.

The tubes B may consist simply of boiler tubes or lap-welded wrought-iron pipe, and. the rings orsections A and heads may be of cast metal.

I am aware of Letters Patent No. 173,593, granted February 15, 1876, to M. H. Crane, and which show a generator composed of a number of central heads arranged one above another and connected by nipples, each head consisting of a hollow cast-metal structure having openings or passages cored therein,

and each head being provided with a series of radial tubes projecting outward therefrom. My generator differs from that above referred to,in that the reservoir or chamber consists of a number of simple rings superposed one upon another in cdge-to-edge contact, and forming a circular chamber which is of uniform cylindric shape from end to end.

In my Letters Patent No. 142,663, granted September 9, 1873, I have shown a generator or boiler comprising a central reservoir composed of superposed sections or rings, each section or ring being constructed with hollow radial arms, which are formed integral therewith of cast metal.

I do not desire to include in my present invention anything shown or described in the tWo patents above referred to.

What I claim as my invention, and desire to secure by Letters Patent, is'

1. In a steam-generator, the combination, with a central upright reservoir or chamber composed of a series of rings superposed one on anotherin edge-to-edge contact, and heads above and below the rings, of a central bolt connecting the heads and securing the heads and rings together, and horizontal series of tubes made separate from the rings and inserted radially therein, substantially as herein described.

I 2. In a stearngenerator, the combination, with a central upright cylindric reservoir or chamber and radial tubes extending therefrom, the reservoir or chamber being provided near its base with a laterally-projecting flange or ledge, e, of a furnace surrounding the reservoir or chaniber,and a number of grates arranged around the reservoir or chamber, and having their inner ends supported on the said flange or ledge, substantially as herein described.

13. T. BABBIT'I.

Witnesses: FREDK. HAYNES, MINERT LINDEMAN. 

